Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
tuc va » thuc va, truc va, tuc xa
vi cau » ve cau, di cau, viet cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang xa hoi. lieu va cau ((duc van) or (tuc va)) hanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang xa hoi. lieu va cau ((duc van) OR (tuc va)) hanh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. lieu va cau ((duc van) or (tuc va)) hanh vi cau tren*.